Form for making fiber insulating-coverings.



PATENTED AUG. 7, 1906.

W. H. BAKER. FORM FORzMAKING FIBER INSULATING OOVERINGS.

APPL IOATION FILED MAE.21, 1906.

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No. 827,777. PATENT'ED AUG. 7, 190a.

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FORM FOR MAKING FIBER INSULATING commas. APPLIOATIOR FILED MALE}, 1906.

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fiivz eaaea 4 of a form embodying my invention.

UNITED STATES PATENT OFFICE.

WILLIAM H. BAKER, OF LOCKPORT, NEW YORK, ASSIGNOR OF THREE- FIFTHS TO JESSE PETERSON, OF LOCKPORT, NEW YORK.

Specification of Letters Patent.

Patented Aug. '7, 1906.

I Application filed March 21,1906. Serial ITO- 307,255.

To all whom, it may concern:

Be it known that I, WILLIAM H. BAKER, a citizen of the United States, residing at Lockport, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Forms for Making Fiber Insulating-Coverings, of which the following is a specification.

My invention relates to forms for making fiber insulating-coverings or similar articles. The object of my invention is the provision of a form over which fiber insulating-coverings may be formed and which comprises a composite structure of metal and wood so constructed that it may be subjected to varying and high degrees of heat without liability of warping or otherwise changing from the exact outline and form it is intended the inner lines of the covering shall have.

Another object of my invention is to provide a form having air-passages, so that the article formed thereon may be subjected to the heated air-currents on the inner as well as the outer sides thereof.

Further objects are the production of a form which can be cheaplyand quickly constructed and parts of which may be used in the construction 'of forms of different outline, to provide in the construction thereof for disposing the wooden parts at different angles, so that the grain of the wood run in different directions, and to so construct the end portions of the form that a fiber covering can be formed having a flared end and an enlarged end tapering toward the end edge of the covering.

With these and other objects in view, toube hereinafter disclosed, this invention consists, primarily, in a composite structure over which sheet fiber may be formed and dried while held on the form without liability of shrinking or warping the form.

It further consists in a form over which sheet fiber is shaped into the desired form, having air-passages for leading the heated air to the inner sides of the formed article, and also in the construction, arrangement, and combination of parts to be hereinafter described, and particularly pointed out in the subjoined claims.

In the drawings, Figure 1 is a side elevation Fig. 2 is a plan view of the same. Fig. 3 is a vertical longitudinal section taken on line 12 1), Fig. 2. Fig. 4 is a horizontal section taken on line 10 w, Fig. 1. Fig. 5 is an enlarged transverse section taken on line :20 (r, Fig. 1. Fig. 6 is a similar section taken on line y y, Fig. 1. Fig. 7 is a similar section taken on line 2 z, Fig. 1. Fig. 8 is an enlarged transverse section through the intermediate portion of the form, showing a sheet of fiber placed over the form and the means of retaining the sheet on the form until dry. Fig. 9 is a transverse section through one of the enlarged ends of the form with a sheet of fiber thereon and clamped thereto.

Referrin to the drawings in detail, like numerals of reference refer to like parts in the several figures.

The numeral 10 designates the composite form considered as a whole and herein shown in a representative manner, it being understood that the construction and general principles may be embodied in forms of different outline and appearance, as it is the purpose of this invention to provide forms over which sheets of fiber may be shaped into any desired form.

The form essentially consists of a body portion 11, comprising a wooden structure 12 within metal facing-pieces 13, the wooden structure of the body portion being built up of wood strips or pieces crossing each other, so that the grain of the parts run in different directions. In the particular form herein illustrated the wooden structureconsists of filling-pieces or short pieces of wood 14, cut

to the height of the form with the grain running vertically and separated by intervening spaces 16, and longitudinally-disposed spac- 3 mg pieces or strips 15, secured to opposite sides of the filling-pieoes at the ends thereof, the spacing pieces or strips on each side of the filling-pieces being separated by intervening spaces 17, crossing the spaces 15 between said filling-pieces. The metal facing-pieces 13 are preferably of thin sheet metal and of a width corresponding to the height of the filling-pieces, said facing-pieces extending the full length of the form and being secured to the spacing-pieces. The metal facing-pieces are each provided with numerous apertures 18 for a pur ose to be hereinafter explained.

Having ully described the construction of the body or frame portion, I wish to note that parts of the desired shape may be applied to the exterior of the body for giving the article to be shaped the desired form. These parts for convenience of description and reference thereto hereinafter may be termed trimming parts or members. In the representative form illustrated I have ap plied near one end of the form an enlargemerit 19, which is formed with tapered pieces 20, secured to the sides of the frame by screws 21 and with a tapered piece 22 applied to the top of the frame, the angle of the tapered pieces where-they abut being rounded to provide the desired form, as shown at 23 in Fig. 6, the enlargement thus provided tapering toward the center of the form. At the opposite end of the form an enlargement 24 is provided which is also formed with tapered side pieces 25, terminating at their outer ends in extensions 26, having their outer surfaces parallel with the metal facingpieces of the frame, and a tapered top piece 27, also provided with an extension 28,having its upper surface parallel with the upper side of the frame. The angles of these tapered pieces where they abut are also rounded to provide, the desired form, as shown at 29 in Fig. 7, the enlargement thus provided tapering toward the end of the form, the direction of taper being opposite to that of the enlargement 19.

Along the upper and lower marginal portions of the metal facing-pieces of the frame trimming pieces or strips 30 are secured, the

upper trimming-strips having their upper edges rounded, as at 31, and the lower trimming-strips being beveled with the narrow edge at the top, as shown at 32, Figs. 5 and 8. These trimming-strips extend from the en largement 19 to the enlargement 24, and between the strips 30 adjacent the enlargements vertical trimming-pieces 34 are secured. With the exception of the trimmingpieces 34, which have the grain of the wood running up and down, the grain of the various wooden trimming parts run lengthwise of the form. Although the direction of the grain in the trimming members may aid to a small degree in retaining the proper lines of the form, the disposition of these parts must necessarily vary in forms of different outline, and therefore the construction of the com posite frame or body portion is solely depended upon to prevent warping or change in outline of the form.

As shown in Figs. 8 and 9, a sheet of fiber in moist condition is applied to the form and by means of suitable clamping or pressing members 35 is pressed and retained against the form, and in this condition the whole is placed within a drying-chamber. The hot air within the chamber enters the air-passages within the form and comes in .contact with the fiber sheet through the perforations in the metal facing-pieces of the form. In

this manner the sheet is dried from the interior as well as from the exterior. and retains 4 the shape of the form.

, The form herein shown is designed for forming fiber insulating-coverings for contact-rail conductors and, as shown in Figs. 8 and 9, is substantially of U formation in cross-section, the sides 36 thereof'having longitudinal depressed portions 37formed by pressing the fiber sheet against the metal facing-pieces and, between the trimming strips of the mold and the lower marginal portions of the sides being flared outward, as at 38, caused by the beveled lower trimmingstrips. By reason of the form having the oppositelytapered enlargements at the ends the ends of the covering are formed accord ingly, one end being flared and the other end bulged out or enlarged and tapered to the end edge.

Although claiming the exact construction herein shown, I also claim the essential features of the form for all shapes of articles capable of being formed from sheets of moist pliable material, which may be dried to retain the shape of the form. I therefore do not wish to limit myself to the construction herein shown, but'hold myself 'at liberty't'o make such changes and modifications as fairly fall within the scope of the following claims,

which I desire to be given the broadest construction permissible by the prior art.

Having thus described my invention, what I claim is 1. A form for shaping articles from moist pliable sheets, consisting of a composite frame or body having air-passages therein.

2. A- form for shaping articles from moist pliable sheets, consisting of a composite frame or body having air-passages therein,

and trimming members secured thereto to give the article the desired shape.

3. A form for shaping articles from moist fiber sheets consisting of a frame or body having in its construction wooden parts with the grain of the wood running in different directions.

4. Aform for shaping articles from fiber sheets consisting of a composite frameor body comprising a metallic plate and wooden parts arranged to provide air-passages.

5. A form for shaping articles from fiber sheets consisting of arcomposite frame or body comprising metallic plates and wooden parts between the plates so disposed that the grain of the wood run in two different directions.

6. Aform for shaping articles from fiber sheets consisting of a frame or body comprising metal plates and wooden parts between the plates so disposed that the grain of the wood run in two different directions, the wooden parts being separated to form airpassages.

7. A form for shaping articles from fiber sheets consisting of a frame or body comprising two perforated metal plates and wooden parts between the plates so disposed that the grain of the wood run in two different directions, the wooden parts being separated to form air-passages leading to perforations in the metal plate.

8. A form for shaping articles from fiber sheets consisting of a composite frame or body having spaced wooden filling-pieces arforated metal facing-plates secured to said spacing-pieces, and trimming members secured to said facing-plates to give the article the desired shape.

1 1. A frame for shaping articles from fiber sheets consisting of a frame or body having a wooden interior structure built with pieces separated to provide air-passages and having the grain of the Wood running in different directions, and a metallic perforated facing secured to said wooden interior structure.

12. A form for shaping articles from fiber sheets consisting of a frame or body having a wooden interior structure built with pieces separated to provide air-passages and having the grain of the wood running in different directions, a metallic perforated facing secured to said wooden interior structure, and suitable trimming members applied to the exterior of said metallic facing to give the article the desired shape.

13. A form for making insulating-coverings from fiber sheets consisting of a com posite frame or body having enlargements applied to opposite ends and trimming-strips applied to the sides of the body at the upper and lower marginal portions thereof, said trimming-strips having their ends abutting against said enlargements.

14. A form for making insulating-coverings from fiber sheets consisting of a composite frame or body formed of an interior wooden structure having air-passages and perforated metal facing-plates applied to said interior structure, trimming members applied. to the body at or near opposite ends to form enlargements, and trimming-pieces applied to the marginal portions of the sides of the body.

15. A form for making insulating-coverings from fiber sheets comprising a composite frame or body having its sides faced with perforated metal plates and wooden parts between said plates separated to form air-passages, said body having trimming members secured at or near its ends to form oppositely-tapered enlargements, and trimming-strips applied -to its sides at the marginal portions thereof; combined with means for pressing and retaining a fiber sheet against the form. v

16. A form for making insulating-coverings from fiber sheets comprising a frame or body having perforated metal side plates, and a wooden interior structure formed of short vertically-disposed pieces separated byintervening spaces and longitudinally-disposed strips at the ends of the verticallydisposed pieces on opposite sides thereof, tapered trimming-pieces applied to the sides and top of the frame or body at one end thereof to form an enlargement tapering toward the center of the form, tapered trimming-pieces secured to the sides and top of the frame or body at the other end thereof to form an enlargement tapering toward said end, and trimming-strips applied to the sides of the body at the upper and lower marginal portions thereof and abutting with their ends against said enlargements; combined with means for pressing and retaining the fiber sheet against the form until dried.

In testimony whereof I have afiiXed my signature in the presence of two subscribing witnesses.

WILLIAM H, BAKER.

Witnesses FRANK S. NICHOLSON, A. EDMUND LEE. 

